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Serum immunoglobulin a deficiency and autoimmune comorbidities: a crossectional study in 281 patients with systemic lupus erythematosus
SUMMARY OBJECTIVE To study the profile of associated autoimmune diseases in a series of patients with systemic lupus erythematosus (SLE) and see if such associations are linked to IgA deficiency. METHODS Two hundred eighty-one patients with SLE were studied for Ig A levels by nephelometry. Levels eq...
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Published in: | Revista da Associação Médica Brasileira (1992) 2020-06, Vol.66 (6), p.752-756 |
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Main Authors: | , , , |
Format: | Magazinearticle |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | SUMMARY OBJECTIVE To study the profile of associated autoimmune diseases in a series of patients with systemic lupus erythematosus (SLE) and see if such associations are linked to IgA deficiency. METHODS Two hundred eighty-one patients with SLE were studied for Ig A levels by nephelometry. Levels equal to or under 0.05g/dL were considered as IgA deficiency. Epidemiological and clinical data, including the presence of associated autoimmune diseases, were extracted from the patient’s charts. RESULTS Ig A deficiency was found in 6% of the patients. In 30.2% of SLE patients, there was at least one more autoimmune disease; Hashimoto thyroiditis and Sjögren’s syndrome were the most common. No association between the occurrence of associated autoimmune disease with IgA deficiency was found. CONCLUSIONS There is a high prevalence of autoimmune diseases associated with SLE. IgA deficiency does not affect the presence of these associations.
RESUMO OBJETIVO Estudar o perfil de doenças autoimunes associadas em uma série de pacientes com lúpus eritematoso sistêmico (LES) e verificar se tais associações estão ligadas à deficiência de imunoglobulina (Ig) A. MÉTODOS Foram estudados 281 pacientes com LES para os níveis de IgA por nefelometria. Níveis iguais ou menores que 0,05 g/dL foram considerados como deficiência dessa imunoglobulina. Dados epidemiológicos e clínicos, incluindo a presença de doenças autoimunes associadas, foram extraídos dos prontuários dos pacientes. RESULTADOS A deficiência de IgA foi encontrada em 6% dos pacientes. Em 30,2% dos pacientes com LES encontrou-se a presença de, pelo menos, mais uma doença autoimune. Tireoidite de Hashimoto e síndrome de Sjögren foram as mais comuns. Não foi possível ligar a ocorrência de uma doença autoimune associada ao LES com deficiência de IgA. CONCLUSÕES Existe uma alta prevalência de doenças autoimunes associadas ao LES. A deficiência de IgA não afeta a presença dessas associações. |
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ISSN: | 0104-4230 1806-9282 |
DOI: | 10.1590/1806-9282.66.6.752 |